HT-1805 4in1 Gas Analyzer Detector Portable H2S/ CO /O2 Harmful Multi Gas Tester
HT-1805 4 In 1 Gas Analyzer Detector Portable O2 CO H2S LEL Tester Toxic portable multi gas detector. Detection of gas H2S/ CO /O2 /Combustible. Range H2S 0-500ppm,CO 0~900ppm O2 0~30% Combustible 0~100% LEL.